The Efficient Market Theory suggests that a stock’s price always reflects all available information about a company, making it impossible to consistently outperform the market. However, Warren Buffett firmly disagrees.
Speaking at the 2012 Berkshire Hathaway Annual Meeting, Buffett stated, “It’s built into the system that stocks get mispriced.” He explained that while Berkshire Hathaway’s stock has historically fluctuated less than many other large companies, it still moves away from its intrinsic value over time. Buffett predicted that over the next 20 years, Berkshire — along with companies like Coca-Cola, Wells Fargo, and IBM — would sometimes be significantly overvalued and at other times significantly undervalued. He emphasized that while the timing and sequence are unpredictable, mispricing is inevitable.
Buffett’s view highlights a fundamental belief: markets are not always perfectly efficient — and opportunities for careful investors still exist.
Buffett’s full explanation on mispriced stocks
See the complete Lessons From Warren Buffett series
© 2025 David Mazor
Disclosure: David Mazor is a freelance writer focusing on Berkshire Hathaway. The author is long in Berkshire Hathaway, and this article is not a recommendation on whether to buy or sell the stock. The information contained in this article should not be construed as personalized or individualized investment advice. Past performance is no guarantee of future results.